Driver&#39;s seat, especially for tractors and agricultural machines



A. LENTZ 4 April 17,1945.-

DRIVERS SEAT ESPECIALLY FOR TRACTORS AND AGRICULTURAL MACHINES I 2 Sheets-Sheet 1 Filed Feb. 8. 1941 v In venfo'r ANTON LENTZ KMA-A. A

April 17, 1945. A. LENTZ 2,373,694 DRIVER'S SEAT ESPECIALLY FOR TRACTORS AND AGRICULTURAL MACHINES Filed Feb; 8, 1941 2 Sheets-Sheet 2 18- 9/ I In vehfor ANTON .LENTZ I7" 11 b, I llfornev device.

Patented A 17, 1945 2,373,694 DRIVERS SEAT, ESPECIALLY FOR TRAC- TCRS AND AGRICULTURAL MACHINES Anton Lentz, Heidelberg, Germany; vested in the Alien Property Custodian Application In This invention relates to a driver's seat, especially for a tractor or the like. The object of the invention is to arrange the seat on the vehicle I so that it is possible to displace it laterally. If

a tractor is used for cultivating fields, that is v for drilling and such work, when it is necessary to keep the tractor in the rows'to be worked, the driver must observe the course of the front wheels.

As the drivers seat is usually fixed on the tractor,

secured in difierent positions. Thus the position of the seat can be selected as required, on the a 'left' or right side, for in the middle, so that the driver during the travel of the tractor-in the rows can easily observe the course of both front wheels, and can guide the tractor correctly in the rows. The seat is connected with the vehicle by means of links on pivots on the longi tudinal axis of the vehicle so that it can be oscil- February a, 1941, Serial No. 378,045 Germany February 12, 1940 aelelms. (01.155 51) rod 2 suitably supported on the post 3 by a p sl. On the post 3 are vertically aligned pintles 5 and 6 on which are pivotally mounted the links I and 8, respectively, pivotally connected with the'tractor 9 by vertically aligned intles l0 and I I which are'disposed one below the other on the longitudinal axis of the tractor 9. A forked latch I2 is pivoted on the tractor 9, and when in the position shown in solid lines in Fig. 1, its arms bear against the stops IS on the upper link I. It is obvious that, when the latch I2 is swung on its pintle ll to the position shown in broken lines'in Fig. 1, the link I is not restrained and can be swung either to the right or to the left, as .shownin broken lines in Fig. 2, until the stops I 3' on the lower link '8 bear against the abutment l5 mounted on the tractor 9, and the seat is secured in its extreme position, to the right in Figs.'3, 4 and 5, the links l' and I'are in the lated from sideto side of the vehicle. This arrangement is designed so that thepivots for supporting the links are located one above the other.

By thus mounting the seat, it can be I and 8', so that the post 3 is constantly vertical.

oscillated from side to side, the links moving.

through an arc of 180. In the middle position,

the seat is secured by a latch hinged on the tractor, and inits extreme lateralflpositions, theseat is supported .by an abutment limiting the swing-.

ing of the links. lnorder tomaintain the links in relative parallel position, they maybe constructed as bell-cranks, and one arm of each lever pivotally connected by a link, their other arms being connected by a post supporting the seat. In this way, the links are caused to oscillate together, preventing any possibility of the links I moving from the middle'positionin opposite-directions, and thus maintaining the seat-support- Fig. 3 is a rear elevation of'a modified form.

of the device',-the seat being moved to the right. Fig. 4 is a view similar to Fig. 3, the. seat being in the middle position.

- .Fig. '5 is a horizontalsection on the line 5 5.

of Fig. 4. I V

(Fig. 6 is a side elevationoi' another form of'the Fig. 'l is are-arelevation of the form shown in Fig. 6. v

The seat ljisimounted on the upper end of a form of bell-cranks having the arms l6 and I I respectively,- pivotally connected by the link l8.- It is obvious from'Figs. Hand 4, that the link l8 maintains the desired relation of the links In the modified form of the devle illustrated [in Figs. 6 and 7, the links I! and 20 are pivotally mounted on the pintles 2| and 22 on the tractor 9, respectively. The free ends of the links I! and 20 are pivotally connected by a link 23 On which the seat-supporting post 3 is hired, approximately at the middle of the link 23. In the middle position of the seat-supporting post 3, the links I9 and 20 are vertically disposed,- and the post 8 is secured in that position by the latch 12. To secure the seat in its extreme positions to the right or to the left, the links I 9 and 20 are provided with the arcuate stops 24 and 25, respectively which bear against the ends of the abutment l5 on the tractor 9, when the links I! and 20. are

oscillated to 'move theseatto the extreme positions. I claim:

1. An' adjustable support'mechanism for the drivers seat of a tractor or the like, comprising in combination a seat-supporting posthavlng'two of which has one end pivotally mounted on one the p ntles'on there, and its other end piv-' W e I otally mounted on one of the pintles on the tractor, an abutment fixed on thetractor limiting the travel of one 0! the said links about its arms of said members.

' pintle on the tractor, and latch'means adjustabiy mounted on the tractor for releasably holdin: said post at a point intermediate the limits 01' travel of said limited link:

2. An adjustable support mechanism for the driver's seat oi' a tractor or the like, comprising in combination two lever members, each pivotally connected withsaid tractor, and swipgable in an arcuate :path transverse to the longitudinal axis 0! thehtrag; a connecting means pivotally. connected interconnecting the swinging axis of the tractor, a connecting means pivotally connected to and interconnecting the swinging ends 01' said lever members and comprising a rodlike seat supporting means, each lever member ends 01 said lever members and comprising a rod-like seat supporting means, each lever mom her having two arms disposed at an angle with respect to, and rigidly connected with-one an- 'otiier, the free end of one arm'- of each member being swingably connected with said connecting means, and-a linlrmember movably connected to and interconnecting the ends of the other having two arms disposed at an angle with respect to one another, the free end of one arm or each member being swingably connected with said connecting means, and a link member mov- 4 ably connected to and interconnecting the free end of the other arms of said members, said lever members swinging about pintles disposed "one below the other and having axes of rotntion substantially parallel to the longitudinal axis of the tractor.

ANTON 

